class_docstr: Unit tests for the ``rydberg_interaction`` function.
docstr: Test that when wires is None the wires correspond to an increasing list of values with
  the same length as the atom coordinates.
docstr_tok: ["Test","that","when","wires","is","None","the","wires","correspond","to","an","increasing","list","of","values","with","the","same","length","as","the","atom","coordinates","."]
code: def test_wires_is_none(self):
      """Test that when wires is None the wires correspond to an increasing list of values with
      the same length as the atom coordinates."""
      Hd = rydberg_interaction(register=atom_coordinates)
  
      assert Hd.wires == Wires(list(range(len(atom_coordinates))))
  
imports: import numpy
  import pytest
  import pennylane
  from pennylane.pulse import rydberg_interaction, rydberg_drive
  from pennylane.pulse.hardware_hamiltonian import HardwareHamiltonian, HardwarePulse, AmplitudeAndPhase
  from pennylane.wires import Wires
  from pennylane.pulse.rydberg import RydbergSettings
label_desc: Use image node_id 3 for calling the TestRydbergInteraction obj's underlying member method code with example usage: obj.test_wires_is_none() without return types